当前位置: X-MOL 学术Carbohydr. Polym. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Valorization of peanut shells: manufacture of bioactive oligosaccharides
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2017-11-11 , DOI: 10.1016/j.carbpol.2017.11.009
Xiana Rico , Beatriz Gullón , José Luis Alonso , Juan Carlos Parajó , Remedios Yáñez

Peanut shells were subjected to non-isothermal aqueous treatments to cause the partial breakdown of hemicelluloses into soluble oligosaccharides and lignin-derived compounds with high antioxidant activity. The effects of temperature on the chemical composition of the substrate and soluble reaction products were assessed. Under selected conditions (210 °C, severity = 4.09), the overall amount of poly- and oligo- saccharides present in the liquid phase reached 9.8 g/L. This solution was refined by consecutive stages of discontinuous diafiltration, yielding a refined product containing about 72.4 wt % of oligomers at a global yield of 8.5 kg/100 kg oven-dry PS. The purified products were characterized by HPLC, MALDI-TOF-MS and FTIR, confirming the major reaction products were saccharides made up of xylose with degrees of polymerization up to 17, substituted with acetyl and methylglucuronosyl groups, for which a number of pharmaceutical and food applications have been proposed. Solubilization of hemicelluloses in the treatments resulted in the production of solids enriched in cellulose and lignin suitable for further applications.



中文翻译:

花生壳的增值:生物活性低聚糖的生产

对花生壳进行非等温水处理,以使半纤维素部分分解为可溶性寡糖和具有高抗氧化活性的木质素衍生化合物。评估了温度对底物和可溶性反应产物的化学组成的影响。在选定的条件下(210°C,严重度= 4.09),液相中存在的多糖和寡糖总量达到9.8 g / L。通过不连续渗滤的连续阶段对该溶液进行精制,以8.5kg / 100kg烘箱干燥的PS的总产量产生包含约72.4wt%的低聚物的精制产品。通过HPLC,MALDI-TOF-MS和FTIR对纯化的产物进行了表征,证实了主要的反应产物是由木糖组成的糖类,聚合度最高为17,已被乙酰基和甲基葡糖醛酸糖基取代,已经提出了许多药物和食品应用。在处理中半纤维素的增溶导致产生了富含纤维素和木质素的固体,适合进一步应用。

更新日期:2017-11-11
down
wechat
bug